Generation Of Setpoint; Weather-Compensated Control; Demand-Compensated Control - Siemens RVL471 Basic Documentation

Siemens Building Technologies
HVAC Products

10.7 Generation of setpoint

10.7.1

Weather-compensated control

Weather-compensated control is used with plant types 1
generated via the heating curve as a function of the outside temperature. The tem-
perature used is the composite outside temperature.
SYNERGYR
OZW30
Knob on
Room setpoint
room unit *
or
Operating line
1, 2 or 3
Composite outside
temperature
Heating curve
Knob on
controller
LPB Data bus
OZW30 SYNERGYR central unit
s Slope
* Active only with room unit level
The impact of the central unit OZW30 is described in section "27.1.4 Combination with
SYNERGYR central unit OZW30 described.
10.7.2

Demand-compensated control

Demand-compensated control is used with plant types 4
The setpoint is delivered to the RVL471 via the data bus (LPB) in the form of a heat
demand signal. In that case, the outside temperature will not be taken into considera-
tion.
Basic Documentation RVL471
10 Function block "Space heating"
20 °C
1 + s
s
1 + s
− − −
x, 2 x and 3 x. The setpoint is
Flow temperature
setpoint T
Vw
Setpoint on
operating line 165
Parallel displacement of
heating curve, operating line 72
LPB
− − −
x, 5 x, and 6 x.
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CE1P2524E
23.10.2002